During the summer, Cartagena attracts many visitors eager to explore its historical center, stroll through its narrow streets with brightly colored houses and nibble on fresh ceviche on the white beaches or while gazing at Fernando Botero’s sculptures on the plaza. What these travelers might not know is that about 600 meters beneath the waters along Cartagena’s shore lies one of the world’s most valuable shipwrecks. Literally full of treasure, it has been a subject of contention among different nations and groups for decades.